The vision of the snail: The spectral sensitivity of the dark-adapted eye

Chernorizov, Alexander M.; Шехтер, Е.Д.; Arakelov, G. G.; Zimachev, M M

doi:10.1007/bf02355653

Cited by 12 publications

(5 citation statements)

References 6 publications

(7 reference statements)

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“…The room was under red light, as helicoid snails are mainly active at night (Cook ) and lack of photoreceptors for wave lengths higher than 580 nm (Chernorizov et al . ). Images were captured with USB cameras fixed to the ceiling (Hercules ® 640 × 480 camera; Carentoir, France, in the ‘small’ group and Logitech ® 1280 × 960 pixels camera, Morges, Switzerland, in the ‘large’ group), which allowed the coverage of a square of side length 170 cm at a 0·20 cm per pixel resolution for the ‘large’ group (50 cm side length and 0·10 cm per pixel resolution for the ‘small’ group).…”

Section: Methodsmentioning

confidence: 97%

Movement propensity and ability correlate with ecological specialization in European land snails: comparative analysis of a dispersal syndrome

Dahirel

Olivier

Guiller

et al. 2014

Journal of Animal Ecology

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Summary1. Intra-and interspecific differences in movement behaviour play an important role in the ecology and evolution of animals, particularly in fragmented landscapes. As a consequence of rarer and generally more fragmented habitat, and because dispersal tends to disrupt benefits brought by local adaptation, theory predicts that mobility and dispersal should be counterselected in specialists. 2. Using experimental data and phylogenetic comparative tools, we analysed movement propensity and capacity, as well as dispersal-related phenotypic traits, in controlled conditions in 20 species of European land snails from the Helicoidea superfamily. Costs of movement in terrestrial gastropods are among the highest in animals, which make them a potentially powerful model to test these predictions. 3. Habitat specialists were indeed less likely to cross a boundary between a familiar and an unfamiliar substrate than generalists. They also had smaller feet, after accounting for size. Furthermore, exploring specialists were slower than generalists and had more tortuous trajectories, leading them to stay closer to the familiar patch. Movement traits were generally evolutionary labile, but some were constrained by body size, a phylogenetically conserved trait. 4. High specialization and low-dispersal ability are two traits often considered to increase species vulnerability to fragmentation, climate changes and extinction. This study confirms they should not be considered separately, due to their integration in a dispersal syndrome. Therefore, specialist species face double penalty under habitat loss and other environmental changes, making them more vulnerable to extinction and contributing to the biotic homogenization of communities.

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Section: Methodsmentioning

confidence: 97%

Movement propensity and ability correlate with ecological specialization in European land snails: comparative analysis of a dispersal syndrome

Dahirel

Olivier

Guiller

et al. 2014

Journal of Animal Ecology

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“…It clearly indicates that variation in wavelength of light stimulus evokes differently to the photoreceptors of snails, so that there is a significant variation in the number of attracted snails by them. Higher attraction of snails towards light source as exposure period prolongs from 15 to 60 minutes indicates that variation in exposure time has significant effect on the attraction of L. acuminata towards light source because the conversion of rhodopsin to metarhodopsin and vice versa takes several minutes to hours depending upon the species [26,27].…”

Section: Discussionmentioning

confidence: 99%

Behavioral Responses of the SnailLymnaea acuminatatowards Photo and Chemo Attractants: A New Step in Control Program of Fasciolosis

Tripathi

Singh

2013

International Journal of Zoology

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Fasciolosis is water and food borne disease, caused byFasciola hepaticaandF. gigantica. SnailLymnaea acuminatais an intermediate host of these flukes. Snail control is one of the major methods to reduce the incidences of fasciolosis. Trapping of snails with the help of photo- and chemoattractants for treatment purposes will be a new tool in control program of fasciolosis. The present study shows that maximum numbers of snails were attracted (52 to 60%), when exposed to photo- and chemostimulant simultaneously, rather than when only chemo- (control) (18 to 24%) or photo- (control) (14 to 19%) stimulus was given. Maximum change in AChE activity in nervous tissue was observed when red monochromatic light was used (258.37% of white light control) as opposed to blue (243.44% of white light control) and orange (230.37% of white light control). The exposure of light directly stimulated the photoreceptors in eye which transmit the signals through nerves to the brain and snail response accordingly. In this signal transmission AChE is one of the important enzymes involved in this process.

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“…As the snails are basically trail following gastropods, it is important to mention that the production of mucus trails is the most energy costly component of the snail locomotion (Ng et al, 2013, Hawkins andHartnoll, 1983). Snails do have eyes however they are not able to see longer neither they can identify the colors (Chernorizov et al 1994). So, they follow the mucus trail available on the ground and cues (airborne chemical smell) arising from nearby home/ nest or from the other snails Crozier, 1918, 1921).…”

Section: Biological Backgroundmentioning

confidence: 99%

Snail Homing and Mating Search Algorithm: A Novel Bio-Inspired Metaheuristic Algorithm

kulkarni,

Kale,

Shastri

et al. 2024

Preprint

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In this paper, a novel Snail Homing and Mating Search (SHMS) algorithm is proposed. It is inspired from the biological behaviour of the snails. Snails continuously travels to find food and a mate, leaving behind a trail of mucus that serves as a guide for their return. Snails tend to navigate by following the available trails on the ground and responding to cues from nearby shelter homes. The proposed SHMS algorithm is investigated by solving several unimodal and multimodal functions. The solutions are validated using standard statistical tests such as two-sided and pairwise signed rank Wilcoxon test and Friedman rank test. The solution obtained from the SHMS algorithm exhibited superior robustness as well as search space exploration capabilities within the less computational cost. The real-world application of SHMS algorithm is successfully demonstrated in the engineering design domain by solving three cases of design and economic optimization shell and tube heat exchanger problem. The objective function value and other statistical results obtained using SHMS algorithm are compared with other well-known metaheuristic algorithms.

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The vision of the snail: The spectral sensitivity of the dark-adapted eye

Cited by 12 publications

References 6 publications

Movement propensity and ability correlate with ecological specialization in European land snails: comparative analysis of a dispersal syndrome

Movement propensity and ability correlate with ecological specialization in European land snails: comparative analysis of a dispersal syndrome

Behavioral Responses of the SnailLymnaea acuminatatowards Photo and Chemo Attractants: A New Step in Control Program of Fasciolosis

Snail Homing and Mating Search Algorithm: A Novel Bio-Inspired Metaheuristic Algorithm

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